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Diff of /trunk/1.6.x/ccs-patch/README.ccs
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| 1689 |
which returns process information of the specified PID in |
which returns process information of the specified PID in |
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"PID manager=\* execute_handler=\* state[0]=\$ state[1]=\$ state[2]=\$" |
"PID manager=\* execute_handler=\* state[0]=\$ state[1]=\$ state[2]=\$" |
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format. |
format. |
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Fix 2008/10/20 |
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@ Use rcu_dereference() when walking the list. |
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I was using "dependency ordering" for appending an element to a list |
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without asking the reader to take a lock. But "dependency ordering" |
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is not respected by DEC Alpha or by some aggressive value-speculation |
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compiler optimizations. |
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On such environment, use of "dependency ordering" can lead to system |
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crash because the reader might read uninitialized value of newly |
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appended element. |
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To prevent the reader from reading uninitialized value of newly appended |
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element, I inserted rcu_dereference() when walking the list. |
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Legend:
| Removed from v.1705 |
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Added in v.1712 |
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TOMOYO
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